diff --git a/OpenRA.Mods.RA/Scripting/Global/DateGlobal.cs b/OpenRA.Mods.RA/Scripting/Global/DateGlobal.cs
index a36c39a11c..e93919bcf6 100644
--- a/OpenRA.Mods.RA/Scripting/Global/DateGlobal.cs
+++ b/OpenRA.Mods.RA/Scripting/Global/DateGlobal.cs
@@ -20,7 +20,7 @@ namespace OpenRA.Mods.RA.Scripting
 		public DateGlobal(ScriptContext context) : base(context) { }
 
 		[Desc("True on the 31st of October.")]
-		public bool Halloween
+		public bool IsHalloween
 		{
 			get { return DateTime.Today.Month == 10 && DateTime.Today.Day == 31; }
 		}
diff --git a/mods/ra/maps/desert-shellmap/desert-shellmap.lua b/mods/ra/maps/desert-shellmap/desert-shellmap.lua
index 83cba4477e..119fdb959e 100644
--- a/mods/ra/maps/desert-shellmap/desert-shellmap.lua
+++ b/mods/ra/maps/desert-shellmap/desert-shellmap.lua
@@ -1,4 +1,4 @@
-if Date.Halloween then
+if Date.IsHalloween then
 	UnitTypes = { "ant", "ant", "ant" }
 	BeachUnitTypes = { "ant", "ant" }
 	ParadropUnitTypes = { "ant", "ant", "ant", "ant", "ant" }